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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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371 // map - used to hold the map of the key. | 371 // map - used to hold the map of the key. |
372 // hash - used to hold the hash of the key. | 372 // hash - used to hold the hash of the key. |
373 __ CmpObjectType(key, FIRST_NONSTRING_TYPE, map); | 373 __ CmpObjectType(key, FIRST_NONSTRING_TYPE, map); |
374 __ j(above_equal, not_symbol); | 374 __ j(above_equal, not_symbol); |
375 // Is the string an array index, with cached numeric value? | 375 // Is the string an array index, with cached numeric value? |
376 __ movl(hash, FieldOperand(key, String::kHashFieldOffset)); | 376 __ movl(hash, FieldOperand(key, String::kHashFieldOffset)); |
377 __ testl(hash, Immediate(String::kContainsCachedArrayIndexMask)); | 377 __ testl(hash, Immediate(String::kContainsCachedArrayIndexMask)); |
378 __ j(zero, index_string); // The value in hash is used at jump target. | 378 __ j(zero, index_string); // The value in hash is used at jump target. |
379 | 379 |
380 // Is the string a symbol? | 380 // Is the string a symbol? |
381 ASSERT(kSymbolTag != 0); | 381 STATIC_ASSERT(kSymbolTag != 0); |
382 __ testb(FieldOperand(map, Map::kInstanceTypeOffset), | 382 __ testb(FieldOperand(map, Map::kInstanceTypeOffset), |
383 Immediate(kIsSymbolMask)); | 383 Immediate(kIsSymbolMask)); |
384 __ j(zero, not_symbol); | 384 __ j(zero, not_symbol); |
385 } | 385 } |
386 | 386 |
387 | 387 |
388 | 388 |
389 void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { | 389 void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { |
390 // ----------- S t a t e ------------- | 390 // ----------- S t a t e ------------- |
391 // -- rax : key | 391 // -- rax : key |
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1662 Condition cc = *jmp_address == Assembler::kJncShortOpcode | 1662 Condition cc = *jmp_address == Assembler::kJncShortOpcode |
1663 ? not_zero | 1663 ? not_zero |
1664 : zero; | 1664 : zero; |
1665 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); | 1665 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); |
1666 } | 1666 } |
1667 | 1667 |
1668 | 1668 |
1669 } } // namespace v8::internal | 1669 } } // namespace v8::internal |
1670 | 1670 |
1671 #endif // V8_TARGET_ARCH_X64 | 1671 #endif // V8_TARGET_ARCH_X64 |
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